Salt Lake City
Tribune article:
http://www.sltrib.com/ci_6564581
I continue to hope for the best, but fear the worst.
Louise
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From: dirt...@comcast.net
To: Texascavers@texascavers.com (Cave Texas)
Subject: [Texascavers] Natural Earthquakes vr
e
> City Tribune article:
>
> http://www.sltrib.com/ci_6564581
>
> I continue to hope for the best, but fear the worst.
>
> Louise
>
> --
> From: *dirt...@comcast.net*
> To: *Texascavers@texascavers.com (Cave Texas)*
> Subject: *[Texasc
And the type of mining they were doing was particularly dangerous. When they mine a vein of coal, they follow the vein leaving pillars of coal to hold up the ceiling. When the vein has played out they try to get out the last of the coal by collapsing the pillars as they retreat and sending the coal
Natural Earthquakes vrs Mine Collapse
The discussion in the press involves a lot more than basic physics. Egos,
liability, and more are behind the comments reported in the press.
>From the physics standpoint, point-explosions (whether quarry blasts, nuclear
>tests, or most mine collapse) produc
